Home / 15,188.87-20,960.60-8,474.42

Finding the Fourth Proportional to 15,188.87, 20,960.60 and 8,474.42

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Solution

The fourth proportional to 15,188.87, 20,960.60 and 8,474.42 is: 11,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.87 : 20,960.60 = 8,474.42 : x
  2. Step 2: Convert to fraction form
    15,188.87/20,960.60 = 8,474.42/x
  3. Step 3: Cross multiply
    15,188.87x = 20,960.60 × 8,474.42
  4. Step 4: Simplify right side
    15,188.87x = 177,628,961.72
  5. Step 5: Solve for x
    x = 177,628,961.72/15,188.87
  6. Step 6: Final answer
    x = 11,694.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.